Traverse mechanism for winding-machines.



G. W. FOSTER;

TRAVERSE MECHANISM FOR WINDING MACHINES.

APPLICATION FILED APR. H, 1916- 7. l 00 1 0 1 y 1 H J m e m w a D1 3 SHEETS-SHEET I- APPLICATION FILED APR. ll. I916.

Patented July 10, 1917.

3 SHEETS-SHEET 2- e. w. FOSTER TRAVERSE MECHANISM FOR WINDING MACHINES.

APPLICATION FILED APR. ll. I916- Patented July 10, 1917.

3 SHEETS-SHEET 3- ATTORNEY GEORGE W. FOSTER, F PROVIDENCE, RHODE ISLAND...

TRAVERSE MECHANISM FOR WINDING-MACHINES.

aaaao le.

Specification of Letters Patent.

Patented July Ml, llWW.

Application filed April 11, 1916. Serial No. 90,447.

To all whom it may concern:

Be it known that I, GEORGE W. Fos'rER, a citizen of the United States,residing at Providence, in the county of Providence, State of Rhode Island, have invented certain new and useful Improvements in Traverse Mechanisms for Winding-Machines, of which the following is a specification.

My invention is an improved traversemechanism for winding machines or similar textile-apparatus. My improvement is particularly adapted for cone-winders for winding conical packages of yarn or other textiles and itsobject is to provide means for increasing the taper of the cone during its building for the purpose of facilitating the all delivery of the yarn in unwinding it therefrom. The particular method of building the cone to effect an increase inthe taper of its yarn-mass as it builds from the center outward is described in my copending application for patent, Serial No. 79,412, filed Feb. 19, 1916. Briefly, it consists in winding the cone with its body composed mainly of layers of uniform length between which are interposed, at intervals, shorter courses of the yarn coils stepped back fromits apex end so that more yarn is laid on at the base of the cone than at its nose to cause it to build up faster at this point. The present improved device for effecting this system of winding consists essentially of means for reciprocating the thread-guide, which lays the yarn in place on the cone, with a normal, maximum traverse and for automatically and periodically shortening and then lengthening the stroke or traverse of the guide at recurring intervals of the winding as fully explained hereinafter.

The arrangement of the mechanism for carrying out the improvement is described in the following specification,illustrated by the accompanying drawings, in which like reference characters designate like parts. In the drawings I Figure 1 is a front view of my improved traverse-mechanism shown in combination with the rotating cone-holder or mandrel on which the cone is wound and the reciprocating traverse-guide for laying the yarn in place thereon;

Fig. 2, an end View of the same; and

Fig. 3, a view similar to Fig. 1, illustrating the method of operation of the devlce.

For the sake of simplification, only the essential elements of the winding-mechanism proper are illustrated in the drawings, it beingunderstood that my improved device is applicable to any Well known form of conewinding machine besides being adaptable for other textile apparatus of a like nature. Referring first to Figs. 1 and 2, B designates a rotatable winding-spindle which may be arranged in any conventional manner to support the tapered mandrel or cone-holder C, and D is the friction driving-drum or roll from which the cone is driven through contact of its surface therewith. The coneholder or support C is arranged to recede from the axis of the drive-roll D as the cop increases in diameter through the employment. of any suitable mechanism as usually provided, but not here shown or described. The drive-roll D is rotated by its shaft 03 from power devices, not here shown, but connected with the source of power in any pre ferred manner by means of gears, belts or otherwise.

Extending parallel with the drive-roll D is'a traverse-bar or rod E, preferably tubular in form and rectangular in cross-section, as shown in Fig. 2. The traverse-bar E is mounted to slide in suitable bearings, not here shown, and generally extends the whole length of the machine in juxtaposition to a series of drive-rolls and cone-holders ,ar

ranged in gang form. Mounted on the traverse-bar E are a series of yarn-guides G, only one of which is herein illustrated, the construction of all of them being the same. As shown more particularly in Fig. 2, the guide G is preferably constructed of 'relatively thih sheet-metal, to render it light in weight, and is formed with an arm 9 reaching back toward the top of the drive-roll D with its end bent upwardly and slotted at g to receive the yarn a: as it leads to the cone. The guide G is formed to fit over the top of a member H which forms a part of the traverse-bar E, being constructed with laterallyextending prongs or studs 71., h fitted to the adjacent ends of two alining, tubular sections of the bar and fixedly secured thereto. Extending downwardly from the member H is a bifurcated arm 72. formed with a vertical slot 72. which is engaged by a roll 70 on a stud is projecting from the end of a bell-crank lever L. The bell-crank lever L is 'fulcrumed on a stud l projecting from the side of a crosshead M mounted to slide ontwo horizontal rods R, R. which 'extend parallel with the traverse-bar E. The guiding-rods R, R are mounted in suitable supports on the frame of the machine in any convenient manner, but this detail of the construction not being essential to an understanding of the present invention is not herein shown or described.

Below the drive-roll shaft d isa horizontal i shaft n extending parallel therewith and connected thereto by a belt, gears or any other equivalent means according to the usual arrangement. The shaft 'n. carries a cam 0 arranged to reciprocate the crosshead M to move the lever L bodily therewith, thus acting as the prime-mover for the traversebar E and thread-guide G. The cam O, as here shown, is preferably of the helical type having a circumferential groove O'adapted to be engaged by a roll p on the end of a stud p p'rQ ecting from the side of the crosshead M, see Fig. 2.

The lever L is fulcrumed on the opposite side of the crosshead M in axial alinement with the cam-roll p, with its arm Z reaching up to connect with the traverse-bar E as bei fore described. The other arm Z of the bellcrank L extends to the left at substantially right-angles to the arm land carries-a stud s at its end on which is a roll S. The roll S side.

' worm-gears Y, Y;

is adapted to travel in a track or, guidearm T pivoted at one endon a stud u fast in a cross-bar U which is fixedly secured to the rods R, R as shown' at the left in Fig. 1. Preferably the track T is of channel-like form or U-shaped in cross-section and the roll S slides in its slot 15, see Fig. 2. At its right hand end the guide-arm or track T is formed with a l'ug 25', see Figs. 1 and 3, carrying a'stud or pin 1: projecting from its disk W.

The cam disk W is mounted on a shaft w driven from a countershaft y b means of the The shat l is rotated from the traverse-cam shaft 07. by means of the spur-gears N, N, see Fig. 2, or through any other suitable connection. The slot w in the face of the cam-disk W is of substantially heart-shape as shown by the dotted lines in Fig. 1. l he low point w of the Rotatably mounted on the pin '0 is a roll V adapted to engage a cam-slot w in a or .one hundred and eighty degrees. The cam-disk W acts as a means for controlling the position of the track or guiding-arm T and thereby regulates the angular position of the bell-crank lever L on the crosshead M during its reciprocation therewith. With the roll S'traveling in the concentric portion 10 of the cam-groove w the track T will be inclined upwardly from the horizontal at an angle of about eighteen degrees; and when the cam-disk W has been turned on its axis to bring the roll S into the low portion 'w of the slot w the track T will be rocked down below the horizontal to an equal extent as shown in Fig. 3. In this manner the track T is caused to be shifted through an angle of approximately thirty-six degrees although the extent of its movement is not arbitrary, but may be arranged as desired between any suitable limits. The shifting of the track T causes a corresponding displacement of the bell-crank lever L during its reciprocation with the crosshead M and thereby acts to regulate the extent of movement of the traverse-bar E. In this way the extent of traverse of the threadguide G in a direction away from the base of-the cone is varied and automatically controlled throughout the winding as next described. 1

The method of operation of the complete apparatus is as follows: Power is applied to the drive-roll shaft d and the cam-shaft n is driven therefrom through their connections, or the shaft 91. might be arranged as the main drive-shaft of the machine with the shaft d driven therefrom. The traverse-cam O rotating with the shaft n acts through the roll p on the stud p to reciprocate the crosshead M back and forth on the rods R, R, the extent of this movement being slightly less than the full length of the cone C, herein illustrated as in process of being wound on the mandrel C. At the start of the winding the cam-disk W is in position with the roll V on the track-arm T at a point in the cam-slot w represented by the dash-lines designated V in Fig. 1. The traverse-cam shaft n imparts rotation through the gears N, N to the countershaft y and the worm or screw Y on said shaft acts through the worm-gear Y to rotate the cam-disk W with a relatively slow movement. The cam-disk W turns in the direction indicated by the arrow 2, Fig. 1, and during the first half of its rotation, that is, through an angular movement of one-hundred-and-eighty degrees, the roll V on the track T will travel throughout the portion Q05 of the cam-slot w. During this first half rotation of the camdisk WV the track T will therefore be maintained in fixed position, inclined above the horizontal, as shown in Fig. 1. While the track remains in this relation the crosshead M will carry the lever L back and forth with its roll S traveling in the guide-slot t to efie'ct a slight oscillation of the lever durmg its reciprocation. It is obvious that if the .track T,were maintained in a horizontal plane intersecting the axis of the lever L, there would be no change in the angular position of the lever during its reciprocation with the crosshead M. That is to say, the roll S on. the arm Z of the lever would travel in the same plane as its axis and hence the arm Z would be maintained in a vertical po-' sition without any tendency to rock about its axis Z. With such an arrangement of the,

upon a standard throw, say six inches, which is the usual length of cone-packages used in mill practice. In some cases, however, it is required to wind longer cones and this may be accomplished with the present arrange ment without increasing the size of the cam. That is to say, by providing means for oscil-,

.lating the lever L during its reciprocation with the crosshead M its arm l may be caused to effect an increment of traverse of the traverse-bar E over the normal throw of the cam 0. As illustrated in the drawings my improved traverse-motion is designed to give an eight-inch traverse from a six-inch cam, but it will be understood that the length of traverse might be still further extended, within certaiulimits, by providing a difi'erent form or arrangement of the controlling-cam As here organized the cam-disk W maintain the track T in the inclined position she 11 in Fig.1 1 at the start of the winding and the roll S on the lever L will travel up and down the incline as the crosshead M slides back and forth on the rods R, B. This causes the arm Z of the lever L to be rocked away from the perpendicular toward the right as illustrated in Fig. 1 at each traverse of the guide outward toward the apex of the cone. 7 The traverse rod E is thus reciprocated with a throw slightly in excess of the throw of the cam 0 and the traverse of the guide G is thereby extended at each stroke. The yarn m leads through the slot 9' in the guide G and is traversed back and forth on the cone-holder C to lay it in cross coils or helices which build up in the full length layers 0. This maximum length winding continues while the roll V on the outer end of the track T travels around the concentric portion @12 of the cam-slot 20, Fig. 1 illustrating the roll in mid position on this part of thecam. The mechanism is preferably arranged to provide for winding several layers ofvyarn on the cone-holder C before the traverse of the guide is shortened to change the taper of the cone, and as here illustrated the yarn will be built up to substantially twice the thickness shown in Fig. 1 before the change is made. That is to say, the guide Gr will be reciprocated with the maximum extent of traverse while the roll V on the track T is traveling from V to V- on the cam-diskW. The cam-disk W turns 'at a relatively slow speed which may be regulated as desired by changing the pitch of its worm and gear driving-connections and through this means the timing of the traverse-changing mechanism may be adjusted. That is to say, the speed of rotation of the cam-disk W may be varied to give any desired number of changes in the traverse at more or less frequent intervals of the winding in accordance with any preferred system of building the cone.

When the cam-disk W has been turned sufliciently to enter the roll V in the curved portion w of the slot 20, the cam will act on the track T to gradually carry it downward as it swings about its fixed pivot a. As the track T swings downwardly it will have. a gradually lessening effect in rocking the lever L until eventually when it reaches a horizontal position its effect on the lever will be m'Z. In other words, the arm Z of the leverL will be displaced from its vertical position to a gradually lessening extent until the trackv T reaches the horizontal at which point the stroke of the traverse-bar E and guide G will be equal to the stroke of the crosshead M and the throw of the cam O. as before explained. The swinging movement of the track T does not ,cease at this point, however, but on the contrary continues until the roll V'has followed the curve 'w of the cam-slot w to its low point 1.0 as shown in Fig. 3. As the track T swings down below the horizontal it acts on the lever L with an opposite effect from that during its inclinationabove the horizontal. .That is to say, as the roll V on the lever L rides down the track when the latter is inclined below the horizontal, the arm Z of the lever will be caused to rock to the left of the perpendicular at each outward traverse and" in this way the shortening of the stroke of the traverse-bar is continued until the minimum is reached. As illustrated in Fig. 3 the minimum extent of traverse is defined by the line being shown as substantially one-half the full or 5 has beenireduced to the "minimum the camdisk W still continues its turning movement and the roll V on the track T is thereby "caused to travel outwardly from its axis through the curved portion w of the camgroove 'w. The track T is therefore swun upwardly about its pivot u until the roll 6 again enters the concentric portion 'w of the cam-groove w at which point the track 10 will have been elevated to its original position illustrated in Fig. l. During this upward movement of the track T the arm Z on the lever L will be rockedupwardly to shift the arm Z to the right across the perpendicular, and in this nianner the length of traverse of the thread-guide G is gradually extended until it finally reaches the maximum to wind the yarn to the full length'of the cone G. It is to be noted that the relation of the main traverse cam O to the cone-holder: C is such that the threadguide G is always returned clear to the base of the cone C with no shortening of the throw ofthe guide in this direction. Eachtime the crosshead M is carried to the left during its reciprocation the roll S on the arm Z of the lever .L will invariably be brought into position in alinement with the axis u on which the track T is pivoted.

Hence, since the pivot point a is in a horizontal plane intersecting the axis Z on which the lever L pivots, the arm Z of the leverL will always be brou ht to a vertical posi-' tionat the left-han extreme of throw of 5.,the'crosshead M. The traverse-cam O. is so placed that the limit of throw of the 'lever, L to the left is in linewith the base end bf the cone Cf and therefore the limit f of trave se of the thread-guide will have a 40 definite relation to the cone-holder C. In

other words, the traverse of the guide always starts at the base endof the cone and the guide returns clear back thereto at each reciprocation with the decrease in the extent 5 of its traverse taking place at the opposite 1 end of the stroke or at the nose end of the cone.- As before stated the rotation of the ram-disk W is continuous throughout the whole operation of the machine and its ratio of speed is generally fixed to provide for several changes in the length of traverse -of.t he yarn during the winding of a complete 'cone.- Each time the cam-disk W comesinto positionto travel theroll V in the concentric portion 10 of its groove '20, the track T will be held in fixed relation for a considerable period with the lever L- oprecurring intervals of the building of each cone with the resulting effect as next explained:

As described in my copending applicatioii before referred to the cone is, built up by first winding the yarn with a full traverse 'for a considerable number of courses or layers; thengradually shortening the 'traverse toward the base of thecone; then gradually lengthening it again until the full traverse is reached; next winding another series of full length layers and again gradually shortening and lengthening the traverse; and "so repeating the process at frequent intervals until the cone reaches its predetermined diameter. In this way the yarn is laid in a thicker mass at the base end of the cone than at its small end with certain of its courses shortened or stepped back from the apex so that gradually the surface of the winding assumes a steeper pitch or increased taper. This increase in the taper is shown in Fig. 3 where it will be seen that the layers of yarn at--the base end of the done are somewhat thicker than at the opposite, smaller end. As the shortening of the courses of theyarn coils takes place gradually there will be'no, tendency for the yarn to bunch up or form ridges, but on the contrarythe surface of the Winding will remain smooth and level. The pressure of the package on the drive-roll will also have "a tendency to level the surface ofthe cone so that its periphery is maintained in a true, conical form and as the winding grows the increase in the taper is multiplied until finally the, full cone has a much steeper pitch onits exterior than at its center. This results in providing for a much freer delivery of the yarn in unwinding itfrom the cone asthe coils may be pulled off more easily with less tendency to cling or drag on its surface. In this way I am enabled to wind acone which is much superior in delivering the yarn as a supply for knitting-machines or for other apparatus employed in the textile arts.

While I have preferredto illustrate my I improved traverse-mechanism as applied to a certain type of winding machine it will A be obvious that it might be adapted to other forms of apparatus or employed with other combinations of the main elements. Likewise, various modifications might be made in the structure and arrangement of the parts of the device without departing from the spirit or scope of the invention; therefore, without limiting myself to the precise. structure shown, what I claim is 1'. In a cone-winding machine, the combination with a rotating cone-holder on which the cone is wound, of a traversing threadguide for laying the yarn in cross-coils on the cone, means to rotate the cone-holder and traverse the guide, and means forgrad ually shortening and lengthening the traverse of the guide at one end of its throw during recurring intervals of the winding, said shortened traverses extending from the base end of the cone part way to its apex end.

2. In a cone-winding machine, the combination with a rotating cone-holder on which the cone is wound, of a reciprocating threadguide for traversing the yarn on the cone,

means for-rotating the cone-holder and reciprocating the guide, and automatically operated means for periodically shortening and lengthening the traverse of the guide at one end of its throw to effect an increase in the taper of the winding, said shortened traverses extending from the base end of the cone part way to the apex end.

3. In a cone-winding'machine, the combination with a rotating cone-holder on which the cone is wound, of a reciprocating threadguide for traversing the yarn on the cone, and means to normally reciprocate the guide i with a full-length traversing the yarn with a maximum extent of traverse during the building of the cone and toalternately shorten and lengthen the traverse of the guide at the apex end of the coneat periodically recurring intervals of the winding to effect an increase in the taper of the yarnmass, said shortened traverses extending from the base end of the the apex end.

4'; In a cone-winding machine, the combination with a rotating cone-holder on which the cone is wound, of a reciprocating thread guide for traversin the yarn on the cone, and means to norma lyreciprocate the guide the base to the apex end of the cone and to periodically shorten and lengthen the stroke of the guide at intervals of the winding to cause it to traverse from the base end of the cone part way to the apex'end, where by to deposit the yarn in a series of shortened coursessteppedback from. the nose of,

the cone and intervening between the length layers of the yarn-mass.

thickness of yarn is laid on at this point to increase the taper of the cone from start to finish of the winding. i

6. In a cone-winding machine, the combination with a rotating cone-holder on which i the cone is wound, of a reciprocating threadcone part way to stroke extending from of a thread-guide for displace the guide with part way from the base of the guide for traversing the yarn on the cone, a traverse-mechanism comprising means for reciprocating the thread-guide with a maximum length of throw, and means cooperating therewith tocause a periodical displacement of the thread-guide with respect to the reciprocating-means whereby the throw of the guide is shortened and then lengthened at one end of its traverse tocause the guide to lay the yarn with a series of short ened courses extending from the base end of the cone part way to the apex end. and intervening between the full, length layers at recurring intervals of the winding.

In a cone-winding machine, the combination with a rotating cone-holder on which the cone is wound, of a reciprocating threadguide for traversing the yarn on the cone, means to reciprocate the thread-guide with a maximum extent of traverse corresponding to the full length of the cone, means to reciprocate the guide with a series of shortened traverses extending from the base of the cone throughout only a portion of,its length and to then increase the traverse to its full extent again, and means to efiect the shortening and lengthening'df the traverseof the guide at periodically recurring intervals of the winding throughout the whole building of the cone.

8, In a cone-winding machine, the combination with a rotatable cone-holder on which the cone is wound, of areciprocating threadguide for traversing the yarn on the cone, means to reciprocate the guide with a plurality of traverses of maximum extent to deposit a series of full length layers on the cone-holder, means to gradually shorten the traverse of the guide at the small end of the cone to deposit an extra thickness of yarn toward the base of the/cone, and to then lengthen the traverse to the maximum extent again, and means to repeat the shortening and lengthening of the vals of the winding.

9. In a cone winding machine, the combination with a rotatable cone-holder, of athread-guide for laying: the yarn in place on the cone-holder, means for traversing the guide with respect to the cone-holder, means for reciprocating the traverse-means with a fixed extent of throw," and means to espect to its traversing-means at recurring, intervals of the winding to efi' ect a difierential movement therebetween whereby the extent of traverse of. the guide is shortened and then lengthened at one end of its with the courses gradually shortened toward the base end of the cone and then lengthened again toward the apex end. in the manner and for the purpose substantially as described. 4 c

10. In a traverse-mechanism for winding traversejfor arelatively brlef period during recurring interthrow to lay the yarn 13. Ina traverse-mechanism for winding machines, the combination with a traversing thread-guide, of means to traverse the guide, means to reciprocate the traversing-means with a fixed extent of throw, and

5 means to displace the guide with respect to its traversing-means during each reciprocation of the latter to extend the length of the traverse during predetermined periods" of its movement and to decrease the length ing recurring intervals of its operation, the opposite extreme of the traverse-of the guide being maintained at a definite point in relation to the traversing-means.

11. In a traverse-mechanism for winding machines, the combination with a traversing thread-guide, of means to traverse the guide, meansto reciprocate the traversing-means with a fixed extent of throw,

movement therebetween to shorten the throw of the guide, at one end of its traverse, the opposite extreme of its traverse being confined to a definite point, and means for com trolling said guide-displacing means to render it operative for the purpose specified at regularly mecurring intervals throughout the traverse of theguide,

. ersing thread-guide, of a reciprocating element connected to traverse'the guide, means to reciprocate said element in a'fixed path, 7 means for displacing the guide with respect to said element during its reciprocation therebyto efl:'ect a differential motion there-' between, and means actuatedjrom the reciprocating-means to operate said displacing-means to cause a gradual shortening and lengthening of the'throw of the guide atone end of its traverse only, the opposite extreme of traverse being confined to a fixed limit throughout the whole operation of the guide.

machines, the v combination with a recipro eating element, of a thread-guide connected to'be reciprocated therefrom, nieans for displacing the guide in relationlto. the reciprocating-element during its movement thereby to eflect a differential motion therebetwee n,

and positively operated means for control-,

ling thegu-ide-displacing 'means 'to "alto?- nately; shorten. and lengthen the throw of the guide at'recurring' intervals ofits traverse, said shortening of thethrow occurring at one endof the traverse only, the opposite extreme'of traverse being confined to a fixed limit. v g 14. In a traverse-mechanism, the combination with a reciprocating element,- of a lever pivoted on' said element, a thread- 'f guide connected with said lever to be traversed' thereby, means to rock the lever durof its traverse at one end of the throw durmeans to displace the guide with respect-to itstraversing-means to eflect a difi'erential 12; In'a traverse-mechanismlfor winding machines, the combination with a trav-.--

ing its movement with the reciprocatingelement'to cause a differential movement of the guide, and positively-driven means for shifting the position of the lever-rocking ,means during recurring cycles in the traverse of the guide.

15. In a traverse-mechanism, the combination with a sliding crosshead, of means to reciprocate the crosshead, a lever pivoted on the crosshead,athread-guide connected to be traversed by the lever. controllingmeans for rocking the lever on its pivot during its reciprocation with the crosshead, a

adapted to regulate the position of the controlling-means to cause a gradual shortening and lengthening of the traverse of the thread-guide during recurring cycles of its operation.

17. In a traverse-mechanism, the combination with a sliding crosshead, of means to reciprocate the crosshead, a lever mounted on the crosshead to be reciprocated therewith,'a thread-guide connected with the lever to bereciprocatedthereby, a controlling member engaging the lever to displace it on the crosshead to efiect a differential motion between the thread-guide and cross- .head, and a cam arranged to operate the controlling-member to regulate the displacement of the lever whereby the guide is reciprocated normally with a traverse of maximum extent and its throw is periodically shortened at recurring intervals of its reciprocation.

18. In a traverse-mechanism, the combination with a sliding crosshead, of means to reclprocatethe crosshead, a lever pivoted .on the crosshead 'to be reciprocated there- 'w1th,a thread-guide connected to the lever to be reciprocated therefrom, a track engagmg the lever to cause it to be rocked on the crosshead during its reciprocation there- 'with to'i'egulate the extent of traverse of the thread-guide, and-a cam for-normally maintaining the track in position to efi'ect a maximum traverse of the guide and for shifting the track to cause a shortening aIfd lengthemng oi its traverse during recurring periods in 1ts operation.

19. In a traverse-mechanism for winding machines-the combinationwith a reciprocatingcrosshead, of a bell-crank lever. piv- 30 I naaspaa oted on said crosshead, a thread-guide connected to be reciprocated from said lever,

I I a pivoted guiding-track, means on the lever engaging said track to slide thereon, and positively and continuously operated means for rocking the track on its pivot to alternately incline the latter below and above the horizontal in the manner and for the purpose substantially as described.

20. In a traverse-mechanism for winding machines, the combination with a reciprocating crosshead, of a bell-crank lever pivoted on the crosshead, a thread-guide connected to be reciprocated from said lever, a swinging track engaging the lever to rock it on the crosshead during, its reciprocation therewith, and means to maintain thetrack normally in a fixed position to cause the lever to reciprocate the guide with a maximum throw and to swing the track away from its fixed position to efi'ect a shortening of the traverse of the guide at recurring intervals of its reciprocation. I '21. In a traverse-mechanism for winding machines, the combination with a reciprocating crosshead, of a bell-crank lever pivoted on the crosshead, a thread-guide connected to be reciprocated from said lever, a swinging track engaging the lever to rock it on the crosshead during its reciprocation therewith, and a substantially heart-shaped cam for-rocking the track to displace it angularly with respect to the path of the bellcrank lever to vary the stroke of the threadguide at intervals of its traverse.

22. In a traverse-mechanism for winding machines, thecombination with a sliding crosshead, of a cam for reciprocating the crosshead, a bell-crank lever pivoted on the crosshead, a thread-guide connected to lie reciprocated from said lever, 'a track engaging the lever to rock the latter during its reciprocation with the crosshead, a second cam for displacing the track angularly with respect to the path of the lever, and means connecting the cams to cause the continuous operation (if-one from the other.

23. ][n a traverse-mechanism for winding machines, the combination with a reciprocating crosshead, of a bell-crank lever pivoted on the crosshead, a thread-guide connected with the lever to be reciprocated therefrom, a track engaging the lever to rock the latter during its reciprocation with the crosshead, and a substantially heartshaped cam engaging the track to displace it angularly with respect to the path of the lever, said cam having a portion of its camface formed concentric with its axis tov adapt it to maintain the track in fixed position for a predetermined period during the reciprocation of the thread-guide.

In testimony whereof I affix my signature.

. GEORGE W. FOSTER. 

